12231604 has 48 divisors (see below), whose sum is σ = 26966016. Its totient is φ = 4716000.

The previous prime is 12231599. The next prime is 12231613. The reversal of 12231604 is 40613221.

It is a super-2 number, since 2×12231604² = 299224272825632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46377 + ... + 46639.

It is an arithmetic number, because the mean of its divisors is an integer number (561792).

Almost surely, 2^12231604 is an apocalyptic number.

12231604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12231604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13483008).

12231604 is an abundant number, since it is smaller than the sum of its proper divisors (14734412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12231604 is a wasteful number, since it uses less digits than its factorization.

12231604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 12231604 is about 3497.3710126322. The cubic root of 12231604 is about 230.4063641584.

Adding to 12231604 its reverse (40613221), we get a palindrome (52844825).

It can be divided in two parts, 12231 and 604, that multiplied together give a square (7387524 = 2718²).

The spelling of 12231604 in words is "twelve million, two hundred thirty-one thousand, six hundred four".